I guess I have a bit of a different perspective on this from a lot of other guys on here. While not walking with God for a while, I was involved in the whole PUA (Pick Up Artist) community, which puts a heavy emphasis on looks of a woman. I read books that have some philosophies I still agree with, even though I'm now walking with God.
There is no denying that men are attracted to women more visually when compared to how women are attracted to men. This is the exact reason that pornography and lusting with the eyes are such problems for men in general; so I can understand your desire to understand this issue from a male's perspective where men are created to visually find women attractive primarily, followed by personality traits and shared interests.
This is not a politically correct thing to say nowadays, but I don't really care, because I've never been one to just be what others expect me to be anyway lol: If I found a woman I was unattracted to physically, that had all the personality traits and shared interests I had, I would still not choose her, because I would not be attracted to her, and I would believe I was settling. So, I would say that I put quite a large emphasis upon looks, because it's what attracts me to a woman, primarily. Of course there has to be more there than just looks, but the looks cannot be absent either.
So, now that I've covered that, I'll talk a little bit about the answer to your original question. The most attractive women I look at and say to myself, "Wow, she's really pretty" have not been wearing really revealing clothing at all. Usually, there is this aura about them, this energy if you will, that sems to just radiate from them. I think women should dress in ways that accentuate their own personalities (example: if she's a free spirited kind of girl, brighter colors and more creative patterns are good for her, because she will attract the men looking for that kind of woman). However, I really don't think it's all that important what clothes she wears as much as it is that she is the kind of girl she needs to be to attract quality guys
I've dated quite a few women in my life, and there is a huge difference between a woman who has class, elegance, and believes in herself compared to a girl who is just trying to get a guy in order to feel better about herself. So, my answer would be that it really doesn't much matter what you wear. Honestly, I think you could wear a skirt down to your ankles, and a long sleeved shirt that showed no arms whatsoever, and if you were a quality woman that gave off the vibe that you are energetic, positive, joyful, fun to be around, etc. then you would still attract men regardless.
Since women seek to find confident and charming men, I would further suggest that something that makes him have to prove these qualities to you would be a good thing to do as well. An example would be wearing something quite unique and which draws more attention in general (in PUA this is called peacocking), so that there is more competition for your attention. Only a man who does have confidence and charm will likely approach you and start up a conversation (ie: because many people are looking on in your direction).
From a man's point of view, I hope this helps.